The “Negativity Effect”

As explained previously, it’s important to avoid thinking in “unhelpful” ways if one desires happiness. The first step to achieve this is to recognise such thinking when it occurs in one’s mind. To help with this, at various points on this website, I will explain common unhelpful thinking that people do.

We can start with a type of unhelpful thinking that a lot of people do which psychologists call the “negativity effect”. It is an important one to understand as it may contribute to one becoming depressed.

In one’s day-to-day life, one faces various events. Some of these events may be “positive” (e.g. one has been told that there will be a salary increase at work) and others may be “negative” (e.g. one has lost one’s expensive mobile phone on the same day as the salary increase). Unfortunately, many of us tend to exaggerate negative events while minimising positive events. In the example I gave, the person may excessively focus on the negative event of losing the mobile phone, while mostly ignoring the “happy” event of having a salary increase. This type of unhelpful thinking can make one feel that things are worse than they actually are as positive events that could have countered the negativity are ignored. Psychologists call this kind of unhelpful thinking, “the negativity effect”.

A more “helpful” way to think would be to see both the positive and negative events in a more balanced way. Perhaps thinking, “Yes, it’s upsetting that I lost my expensive mobile phone, but on the brighter side, I got a nice salary raise at work”.

So why do many of us tend to exaggerate negative events? It is possible that the human brain has an inbuilt tendency to think in negative ways. This tendency may have been inherited from our ancestors from many thousands of years ago when they would have lived in forests. In such an environment, one’s survival would have depended on “remembering” negative events. For example, imagine that one of our ancestors was daydreaming and walking without a care in the world, and then accidentally stepped on a tiger’s tail.

If our ancestor survived the ensuing chase, it would have been in his or her survival interest to not forget the negative event of stepping on a tiger’s tail. By focusing on this negative event, our ancestor would have kept remembering the importance of not daydreaming while walking in the forest! While nowadays most of us don’t walk amongst tigers and other dangers in forests, the tendency to focus on negative events may still persist in our brains.

Here is a more modern example of the “negativity effect” type of unhelpful thinking.


Joe was to take an early morning flight, but unfortunately, because he forgot to set his alarm, he left very late for the airport. At the airport, the ticketing personnel conveyed the bad news to Joe that he had missed his flight. But luckily for Joe, a sympathetic senior manager of the airline felt sorry and issued a free ticket to him for a flight leaving for his destination just a few hours later. While waiting for this next flight, Joe only focussed on the negative event of missing his flight, rather than also taking in the positivity that the free ticket for the next flight gave him. He kept telling himself how unlucky he was to have forgotten to set his alarm clock while downplaying the good fortune he had of having a sympathetic airport worker who was able to help him in a big way. The excessive focus on the negative event made him unnecessarily feel very sad about his situation.


As you have seen, the negativity effect can cause unnecessary unhappiness. It’s therefore important to recognise and change such thinking when it happens to you. Later in this website, I will explain other types of unhelpful thinking that people commonly do, and I will also give you various mental tools you can use to change such thinking.

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